captw
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- Bailieboro, Ontario, Canada
700R4 swap
it makes no sense to install the 700R4 into an otherwise unmodified M1009, unless you leave the transmission selector in drive, and don't use OD, because the axle ratio is 3:08 to 1....the engines in these trucks were designed to run at a decent RPM, but with the 700R4 and 3:08 gears it will be very lazy at highway speed....the only useful thing with this combo is that if wired up, the lockup in the TC will give you better fuel economy in "Drive"....these aren't idle statements, I own a 1985 C10 longbed that came out of the factory with 6.2L, 700R4, 3:08 gears....the OD is only useful once the truck is approaching 75 MPH.....the M1008 is a candidate for the this swap, due to the 4:56 gears, providing the 700R4 is strengthened if you want to use the truck in a harsh environment...in the end it's left to the vehicle owner to decide what to do, but if you have a M1009, it may be alot of effort and expense for nothing other than a lock up converter giving you a little better fuel economy....W
it makes no sense to install the 700R4 into an otherwise unmodified M1009, unless you leave the transmission selector in drive, and don't use OD, because the axle ratio is 3:08 to 1....the engines in these trucks were designed to run at a decent RPM, but with the 700R4 and 3:08 gears it will be very lazy at highway speed....the only useful thing with this combo is that if wired up, the lockup in the TC will give you better fuel economy in "Drive"....these aren't idle statements, I own a 1985 C10 longbed that came out of the factory with 6.2L, 700R4, 3:08 gears....the OD is only useful once the truck is approaching 75 MPH.....the M1008 is a candidate for the this swap, due to the 4:56 gears, providing the 700R4 is strengthened if you want to use the truck in a harsh environment...in the end it's left to the vehicle owner to decide what to do, but if you have a M1009, it may be alot of effort and expense for nothing other than a lock up converter giving you a little better fuel economy....W